CVEvulnerability

CVE-2020-27671

7.8 HIGH Published 2020-10-22 Modified 2026-06-17 Official page ↗

Status: Modified
Published: 2020-10-22
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 7.8 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected]): 6.9 MEDIUM — AV:L/AC:M/Au:N/C:C/I:C/A:C

Description

An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.

Affected configurations

• xen xen (>= 4.2.0 <= 4.14.0) • opensuse leap 15.1 • opensuse leap 15.2 • debian debian linux 10.0 • fedoraproject fedora 31

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/8 Mailing List, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-346.html Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ lists.fedoraproject.org
https://security.gentoo.org/glsa/202011-06 Third Party Advisory
https://www.debian.org/security/2020/dsa-4804 Third Party Advisory
https://xenbits.xen.org/xsa/advisory-346.html Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/19/8 Mailing List, Third Party Advisory
http://xenbits.xen.org/xsa/advisory-346.html Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/ lists.fedoraproject.org
https://security.gentoo.org/glsa/202011-06 Third Party Advisory
https://www.debian.org/security/2020/dsa-4804 Third Party Advisory
https://xenbits.xen.org/xsa/advisory-346.html Patch, Vendor Advisory